INDEPTH: COMPUTER SECURITY
Internet speak
CBC News Online | Feb. 18, 2005
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virus
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Virus - A piece of malicious software that copies itself into other files on a computer. A computer virus, like a biological virus, requires a "host" to spread. It incorporates itself into the code of other pieces of software and spreads when that software is run. When they first emerged, viruses were often spread on floppy disks or when the host file was uploaded to a server. True viruses are less common now than Trojan horses or worms, but the word is often used to mean any kind of malicious software, as in anti-virus software.
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